Tina Cohen-Chang

Although she's shy and insecure, Tina shines when she's singing in glee with her friends. In the sixth grade, Tina faked a stutter to get out of presenting a speech. When she realized it made people leave her alone, she continued to fake it. She reveals this to Artie, who has a crush on her, in Episode 1.9, "Wheels," and wheelchair-bound Artie is disappointed that they don't actually share a disability.